ISO INTERNATIONAL STANDARD 18417 First edition 2017-03 Iodine charcoal sorbents for nuclear facilities - Method for defining sorption capacity index Pieges a iode pour installations nucléaires -Méthode pour définir la capacité de rétention Reference number IS0 18417:2017(E) [so International Organization for Standardization @ IS0 2017 =ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS underI ted without license from IHS IS0 18417:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISOcopyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Intenationaibr PrganizationforStandardization icensee-ZHEJIANG INST OF STANDARDIZRoISQ s1.7 - All rights reserved Not for Resale, 2017/5/11 01:35:35 etworking permitted without license from IHS IS0 18417:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. .1 2 Normative references ..1 3 Terms and definitions ..1 4 Principles of the method ..2 5 Preparation of the test .4 5.1 General. .4 5.2 Removal of air impurity and humidity into the installation 5.3 Radioactive methyl iodide used for sorbent testing .5 5.4 Preparation of sorbent samples 5.5 Measuring devices.. .6 5.6 Conditionsforachievingeguilibriumduringthetest .6 5.7 Safe conditions for workers and members of the public 6 Test conditions ..7 7 Sorbent testing. .7 8 Test performance .9 9 Determination of the sorption capacity index .10 9.1 Sorption capacity index determination. .10 9.2 Calculating sorption capacity index. .11 9.3 Uncertainties of measurements .12 10 Documenting test results. ..13 Annex A (normative) Format of test report (for the customer) ..14 AnnexB(normative)Formatofinternaltestreport ..15 Annex C (normative) Measurements results ..16 Annex D (informative) Example of expected results for sorption capacity index ..17 Bibliography ..19 iii =ZHEJIANG INST OF STANDARDIZATION C1 5956617 ithout license from IHS